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RISHigh-Order Time-Integration Schemes with Explicit Time-Splitting Methods
Publisher: American Meteorological Society
Abstract: New high-order time-integration schemes for fully elastic models are presented. The new schemes, formulated using the Richardson extrapolation that employs leapfrog-type schemes, can give a good performance for linear model ...
Accuracy of Rotational and Divergent Kinetic Energy Spectra Diagnosed from Flight-Track Winds
Publisher: American Meteorological Society
Abstract: nder assumptions of horizontal homogeneity and isotropy, one may derive relations between rotational or divergent kinetic energy spectra and velocities along one-dimensional tracks, such as might be measured by aircraft. ...
A Comparison of Mesh Refinement in the Global MPAS-A and WRF Models Using an Idealized Normal-Mode Baroclinic Wave Simulation
Publisher: American Meteorological Society
Abstract: dealized normal-mode baroclinic wave simulations are conducted to examine the impact of continuous mesh refinement compared with stepwise changes in resolution using nested grids. The nested-grid results are produced using ...
Hybrid Mass Coordinate in WRF-ARW and Its Impact on Upper-Level Turbulence Forecasting
Publisher: American Meteorological Society
Abstract: AbstractAlthough a terrain-following vertical coordinate is well suited for the application of surface boundary conditions, it is well known that the influences of the terrain on the coordinate surfaces can contribute to ...
Vertical Resolution Requirements in Atmospheric Simulation
Publisher: American Meteorological Society
Abstract: AbstractThe role of vertical mesh spacing in the convergence of full-physics global atmospheric model solutions is examined for synoptic, mesoscale, and convective-scale horizontal resolutions. Using the MPAS-Atmosphere ...
Role of Midlatitude Baroclinic Condition in Heavy Rainfall Events Directly Induced by Tropical Cyclones in South Korea
Publisher: American Meteorological Society
Atmospheric Kinetic Energy Spectra from Global High-Resolution Nonhydrostatic Simulations
Publisher: American Meteorological Society
Abstract: inetic energy (KE) spectra derived from global high-resolution atmospheric simulations from the Model for Prediction Across Scales (MPAS) are presented. The simulations are produced using quasi-uniform global Voronoi ...
Evaluation of Global Atmospheric Solvers Using Extensions of the Jablonowski and Williamson Baroclinic Wave Test Case
Publisher: American Meteorological Society
Abstract: he hydrostatic and nonhydrostatic atmospheric solvers within the Model for Prediction Across Scales (MPAS) are tested using an extension of Jablonowski and Williamson baroclinic wave test case that includes moisture. This ...
Limited-Area Atmospheric Modeling Using an Unstructured Mesh
Publisher: American Meteorological Society
Abstract: AbstractA regional configuration of the atmospheric component of the Model for Prediction Across Scales (MPAS-A) is described and evaluated. It employs horizontally unstructured spherical centroidal Voronoi meshes (nominally ...
A Multiscale Nonhydrostatic Atmospheric Model Using Centroidal Voronoi Tesselations and C-Grid Staggering
Publisher: American Meteorological Society
Abstract: he formulation of a fully compressible nonhydrostatic atmospheric model called the Model for Prediction Across Scales?Atmosphere (MPAS-A) is described. The solver is discretized using centroidal Voronoi meshes and a C-grid ...